diff --git a/src/pulsaranimationwidget.h b/src/pulsaranimationwidget.h
index f99beedfdef84a0d61dce45632701ae82159be70..45369f9b4113db0571340a4b61d0ec14c917f3bd 100644
--- a/src/pulsaranimationwidget.h
+++ b/src/pulsaranimationwidget.h
@@ -28,6 +28,12 @@
 #include <QMouseEvent>
 #include <QDebug>
 
+#ifdef __APPLE__
+    #include <OpenGL/glu.h>
+#else
+    #include <GL/glu.h>
+#endif
+
 #define PI 3.14159265